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Burglar Alarm Cost Calculator UK

Estimate the 2026 cost of installing a burglar alarm — by system type, property size and add-ons. Instant result, no email needed.

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2026 supply + fit pricing

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5 steps. Supply-and-fit price from NSI- or SSAIB-approved installers. Monitoring is an added monthly subscription (see below).

Methodology

How This Calculator Works

We take a base cost by system type, add property size and any CCTV, then apply a regional labour multiplier from 2026 installer quotes. Two things move the final bill more than most homeowners expect in 2026: whether the system is wireless or hard-wired (a wired grade-3 install costs more in labour but is demanded by many insurers), and whether you bolt on cameras — adding a four-camera system alongside the alarm is now one of the most common upgrades. If cameras are on your list, size that spend with our CCTV installation cost guide or the CCTV cost calculator before you brief an installer, so the alarm and CCTV are quoted together on one visit.

System + property + add-ons (supply + fit)

Bells-only — £650 base · Smart — £850 base
Professionally monitored — £1,050 base (ARC + URN)
3 bed +£100 · 4 bed +£200 · 5+ bed +£350
4-camera CCTV add-on — +£700 (range £450–£1,200)
Monitoring subscription £15–£40 / mo — extra, not in the estimate

Includes control panel, sensors, siren, keypad/app setup, VAT and standard installation. Ask your installer to confirm their NSI or SSAIB certification.

Regional Multipliers

London 1.28× · South East 1.14× · South West 1.05×
East of England 1.08× · Midlands 1.00× (baseline)
North West 0.93× · North / Yorkshire 0.92×
Wales 0.94× · Scotland 0.96× · NI 0.88×

Low/high band is ±20% around the mid estimate. A firm price follows a site survey.

Typical Burglar Alarm Prices (2026)

Supply-and-fit by system type, Midlands baseline (±15% band).

System	Typical 2026 install cost	Notes
Bells-only (audible) alarm	£500–£800	No monitoring fee
Professionally monitored alarm	£750–£1,300	+ £15–£40 / month ARC
Smart alarm + 4-camera CCTV	£1,200–£2,500+	App control + video

These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.

Frequently Asked Questions

How much does a burglar alarm cost in 2026?

A bells-only wireless alarm typically costs £500–£800 fitted in 2026, a professionally monitored system £750–£1,300 plus £15–£40 a month, and a smart alarm with CCTV £1,200–£2,500+. London and the South East run 20–30% higher.

Does the price include monitoring?

No — the estimate is the install cost. Professional 24/7 monitoring via an Alarm Receiving Centre adds £15–£40 a month, and police response also needs a confirmed alarm and a one-off ~£50 URN fee, arranged by an accredited installer.

Is a monitored alarm worth it?

If you want a response when you are away, or your insurer requires it, yes. A monitored alarm calls a keyholder or the police; a bells-only alarm only sounds locally. Police response is only available on a confirmed, monitored system with a URN from an NSI/SSAIB installer.

Will a burglar alarm lower my home insurance?

It can. A professionally installed, NSI/SSAIB-certified alarm may earn a premium discount and keeps cover valid where an alarm is a condition — a DIY or non-accredited system can mean a claim is reduced. The discount varies by insurer.

What alarm grade do I need?

Most homes use a Grade 2 system (BS EN 50131); higher-value homes and many commercial insurance conditions need Grade 3. The grade is set by your insurer and a risk assessment, so confirm it before installation.

How accurate is this burglar alarm cost calculator?

It gives a guide from 2026 UK prices for the system type, number of sensors and monitoring option you choose, not a fixed quote. Real cost depends on property size, wired versus wireless routing, cable access, the number of entry points and any smart integration. An installer confirms the price after surveying your home.

What does the alarm estimate include and exclude?

The figure covers the control panel, chosen sensors, a siren, keypad or app setup and installation with VAT. It excludes ongoing monitoring subscriptions unless added, extra door and window contacts, CCTV, smart-lock integration, cabling through awkward walls and any redecoration. A survey confirms how many detectors your layout actually needs.

Why might a real alarm quote differ from the calculator?

The calculator assumes a typical home with straightforward cable routes. On site, an installer may add cost for larger properties, extra zones, a hard-wired grade-2 or grade-3 system, difficult cable runs or an insurer-specified spec. Police-response monitoring needs a certified installer, and London jobs vary, so treat the estimate as a starting figure.

Burglar Alarm Cost Guide

Full 2026 install and monitoring prices by system type.

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Reviewed by the BestBuilders editorial team on 15 August 2026. Alarm prices reflect 2026 UK supply-and-fit quotes, modelled as base-by-type plus property size and CCTV, with a regional uplift. This calculator gives a budgeting estimate, not a quote · Next scheduled review: November 2026 · See our editorial standards.